Journal
MEDICAL JOURNAL OF AUSTRALIA
Volume 200, Issue 3, Pages 157-160Publisher
WILEY
DOI: 10.5694/mja13.10645
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Funding
- Country Health South Australia
- Australian Health Ministers' Advisory Council
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Objective: To evaluate the impact of the regionalised Integrated Cardiovascular Clinical Network (ICCNet) on 30-day mortality among patients with myocardial infarction (MI) in an Australian rural setting. Design, setting and patients: An integrated cardiac support network incorporating standardised risk stratification, point-of-care troponin testing and cardiologist-supported decision making was progressively implemented In non-metropolitan areas of South Australia from 2001 to 2008. Hospital administrative data and statewide death records from 1 July 2001 to 30 June 2010 were used to evaluate outcomes for patients diagnosed with MI In rural and metropolitan hospitals. Main outcome measure: Risk-adjusted 30-day mortality. Results: 29 623 independent contiguous episodes of MI were identified. The mean predicted 30-day mortality was lower among rural patients compared with metropolitan patients, while actual mortality rates were higher (30-day mortality: rural, 705/5630 [12.52%] v metropolitan. 2140/23 993 [8.92%]: adjusted odds ratio [OR], 1.46; 95% Cl, 1.33-1.60; P < 0.001). After adjustment for temporal improvement in MI outcome, availability of immediate cardiac support was associated with a 22% relative odds reduction in 30-day mortality (OR, 0.78; 95% Cl, 0.65-0.93; P = 0.007). A strong association between network support and transfer of patients to metropolitan hospitals was observed (before ICCNet, 1102/2419 [45.56%] v after ICCNet, 210.0/3211 [65.4%]; P < 0.001), with lower mortality observed among transferred patients. Conclusion: Cardiologist-supported remote risk stratification, management and facilitated access to tertiary hospital-based early invasive management are associated with an improvement in 30-day mortality for patients who initially present to rural hospitals and are diagnosed with MI. These interventions closed the gap in mortality between rural and metropolitan patients in South Australia.
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